The best example of an industrial union is the:

Some government policies provide incentives for private decision makers to choose to solve the problem of externalities on their own. What term do we use to describe such policies?

In 2011, about what percentage of U.S. households had annual before-tax incomes of less than $15,000?

A. About 6 percent B. About 13 percent C. About 25 percent D. About 33 percent